It's being marketed as a USB-stick rather than a traditional card reader, but with the difference that it is expandable by storing its information (whether it be digicam photos or any other digital data) on xD cards. It also has a USB2.0 interface for faster transfers.

Realistically, it's just a normal card reader/writer becasue it doesn't do anything that others can't do. It does look fairly nice and compact though.